manolis wrote: ↑
Fri Aug 04, 2017 6:39 am
“I say again manolis, make one and show us. pretty pictures mean nothing.”
the meaning of a technical discussion like this one,
is by far different than:
“make one and show us”.
Someone proposes a new (or “new”) technical solution; the rest forum members can read, understand (the “pretty pictures” mean a lot in this stage) and think.
Then, if they like so, they write down their justified (or not) technical objections / thoughts.
It is a “win-win” process.
The guy who proposes the new, or “new”, technical solution is asking for “independent third party” objections and opinions in order to decide either to abandon the idea, or to proceed with it (by making prototypes, by testing them etc).
He is also presenting his idea to “whom it may concern”.
By the way:
Seven months ago, at page 87, posts #1296-1297, a discussion remained unfinished, even if the “make one and show us” was the case:
The PatOP pattakon engine is real:
works on Diesel fuel:
(youtube video: https://www.youtube.com/watch?v=2ByEgfTTq1I
and concentrates unique characteristics:
Compression ratio: 17
Scavenging pump bore: 130mm (1.34 scavenging ratio)
Total engine height: 500mm
Total engine weight (without the flywheel): less than 20Kp
It is an:
full-balanced (vibration free),
direct-injection Diesel engine,
with built-in "volumetric" (for a wider rev range and flat torque curve) scavenging pump,
with four-stroke-like lubrication,
and with some 35% as compared to the conventional, or some 20% as compared to the Junkers-Doxford and to the OPOC of EcoMotors, additional time for the injection and combustion of the fuel.
It is also patented,
which means that some experts / specialists in the field (examiners in big patent offices like the USPTO, the UK-IPO etc), after searching all the prior art, they decided the idea in question is new, it has inventive step and is industrially applicable.
Worth to mention here:
The only things from the market used in the above PatOP prototype engine are the piston rings (from a VW TDi), the plain bearings (from a BMW 1600cc) and the fuel injection system (it is from a cheap Chinese 4-stroke electric generator).
All the rest parts were made either from 7075 aluminum billet (if I remember correctly, we started with 54Kg (120lb) aluminum for the casing) or from Orvar Supreme steel (crankshaft, connecting rods).
Enjoy how nice, smoothly and clearly it runs on Diesel fuel, standing free on a desk. We talk for big single-cylinder direct injection Diesel engine.
The prototype works as the theory predicts.
However, the important is the theory, the theoretical solution proposed; not the working prototype.
Please do read, at the page 107, post #1601 of this thread, what the professor Rui Chen of the famous Loughborough University - UK did (“Quasi-constant volume spark ignition combustion”, presentation in the International Engine Expo 2009, Stuttgart Germany) in order to achieve the longer piston dwell of the OPRE and PatOP engines.
So, if you still don’t like to comment on the PatATE idea because the “make one and show us” requirement is not yet fulfilled,
you can alternatively write your technical objections / thoughts about the PatOP.